Chart: Add unit tests for default backend & topology spread constraints. (#11219)

charts/ingress-nginx/tests/controller-deployment_test.yaml

@@ -78,3 +78,43 @@ tests:
       - equal:
           path: spec.template.spec.containers[0].resources.limits.memory
           value: 512Mi
+
+  - it: should create a Deployment with topology spread constraints if `controller.topologySpreadConstraints` is set
+    set:
+      controller.topologySpreadConstraints:
+        - labelSelector:
+            matchLabels:
+              app.kubernetes.io/name: '{{ include "ingress-nginx.name" . }}'
+              app.kubernetes.io/instance: '{{ .Release.Name }}'
+              app.kubernetes.io/component: controller
+          topologyKey: topology.kubernetes.io/zone
+          maxSkew: 1
+          whenUnsatisfiable: ScheduleAnyway
+        - labelSelector:
+            matchLabels:
+              app.kubernetes.io/name: '{{ include "ingress-nginx.name" . }}'
+              app.kubernetes.io/instance: '{{ .Release.Name }}'
+              app.kubernetes.io/component: controller
+          topologyKey: kubernetes.io/hostname
+          maxSkew: 1
+          whenUnsatisfiable: ScheduleAnyway
+    asserts:
+      - equal:
+          path: spec.template.spec.topologySpreadConstraints
+          value:
+            - labelSelector:
+                matchLabels:
+                  app.kubernetes.io/name: ingress-nginx
+                  app.kubernetes.io/instance: RELEASE-NAME
+                  app.kubernetes.io/component: controller
+              topologyKey: topology.kubernetes.io/zone
+              maxSkew: 1
+              whenUnsatisfiable: ScheduleAnyway
+            - labelSelector:
+                matchLabels:
+                  app.kubernetes.io/name: ingress-nginx
+                  app.kubernetes.io/instance: RELEASE-NAME
+                  app.kubernetes.io/component: controller
+              topologyKey: kubernetes.io/hostname
+              maxSkew: 1
+              whenUnsatisfiable: ScheduleAnyway